EC > GATE 2026 > QPSK
A QPSK modulated signal from an additive white Gaussian noise (AWGN) channel is received with an Eb/No = 8.4 dB at the input of a coherent QPSK demodulator. A maximum-likelihood reception method is used in the demodulator.
Assume the complimentary error function erfc(u) ≅ [1/(u√π)]exp(−u2).
Which is the nearest bit error rate (BER) at the output of the demodulator?
Assume the complimentary error function erfc(u) ≅ [1/(u√π)]exp(−u2).
Which is the nearest bit error rate (BER) at the output of the demodulator?
Correct :
Similar Questions
Mr. X speaks _________ Japanese _________ Chinese.
A sum of money is to be distributed among P, Q, R, and S in the
proportion 5 : 2 : 4 : 3, respectively.
If R gets ₹ 1000 more than S, what is the share of Q (...
A trapezium has vertices marked as P, Q, R and S (in that order anticlockwise).
The side PQ is parallel to side SR.
Further, it is given that, PQ = 11 cm, QR...
Total Unique Visitors
Loading......